MCQ
$\int_{}^{} {{{\sec }^p}x\tan x\;dx = } $
  • A
    $\frac{{{{\sec }^{p + 1}}x}}{{p + 1}} + c$
  • $\frac{{{{\sec }^p}x}}{p} + c$
  • C
    $\frac{{{{\tan }^{p + 1}}x}}{{p + 1}} + c$
  • D
    $\frac{{{{\tan }^p}x}}{p} + c$

Answer

Correct option: B.
$\frac{{{{\sec }^p}x}}{p} + c$
b
(b) Put $\sec x = t \Rightarrow \sec x\tan x\,dx = dt,$

therefore $\int_{}^{} {{{\sec }^p}x\tan x\,dx} = \int_{}^{} {{t^{p - 1}}dt = \frac{{{t^p}}}{p} + c} = \frac{{{{\sec }^p}x}}{p} + c.$

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